UALCAN was used to investigate PTGER1 expression according to clinicopathological variables, including age, which is subclassified into young adults, middle-aged, older adults, and elderly, and by racial groups of Caucasian patients, African American patients, and Asian patients, and tumor stages in comparison to normal in KIRC, KICH, UCEC, and LIHC. This evidence concerns the gene PTGER1 and neoplasm.